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José Carlos Madureira

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Papers by José Carlos Madureira

Research paper thumbnail of Exciton g factor of type-II InP/GaAs single quantum dots

Physical Review B, 2006

We investigated the magneto-optical properties of type-II InP/GaAs quantum dots using single-dot ... more We investigated the magneto-optical properties of type-II InP/GaAs quantum dots using single-dot spectroscopy. The emission energy from individual dots presents a quadratic diamagnetic shift and a linear Zeeman splitting as a function of magnetic fields up to 10 T , as previously observed for type-I systems. We analyzed the in-plane localization of the carriers using the diamagnetic shift results. The values for the exciton g factor obtained for a large number of a InP/GaAs dots are mainly constant, independent of the emission energy, and therefore, of the quantum dot dimensions. The result is attributed to the weak confinement of the holes in type-II InP/GaAs quantum dots.

Research paper thumbnail of Exciton g factor of type-II InP∕GaAs single quantum dots

Physical Review B, 2006

We investigated the magneto-optical properties of type-II InP / GaAs quantum dots using single-do... more We investigated the magneto-optical properties of type-II InP / GaAs quantum dots using single-dot spectroscopy. The emission energy from individual dots presents a quadratic diamagnetic shift and a linear Zeeman splitting as a function of magnetic fields up to 10 T, as previously observed for type-I systems. We analyzed the in-plane localization of the carriers using the diamagnetic shift results. The values for the exciton g factor obtained for a large number of a InP / GaAs dots are mainly constant, independent of the emission energy, and therefore, of the quantum dot dimensions. The result is attributed to the weak confinement of the holes in type-II InP / GaAs quantum dots.

Research paper thumbnail of Exciton g factor of type-II InP/GaAs single quantum dots

Physical Review B, 2006

We investigated the magneto-optical properties of type-II InP/GaAs quantum dots using single-dot ... more We investigated the magneto-optical properties of type-II InP/GaAs quantum dots using single-dot spectroscopy. The emission energy from individual dots presents a quadratic diamagnetic shift and a linear Zeeman splitting as a function of magnetic fields up to 10 T , as previously observed for type-I systems. We analyzed the in-plane localization of the carriers using the diamagnetic shift results. The values for the exciton g factor obtained for a large number of a InP/GaAs dots are mainly constant, independent of the emission energy, and therefore, of the quantum dot dimensions. The result is attributed to the weak confinement of the holes in type-II InP/GaAs quantum dots.

Research paper thumbnail of Exciton g factor of type-II InP∕GaAs single quantum dots

Physical Review B, 2006

We investigated the magneto-optical properties of type-II InP / GaAs quantum dots using single-do... more We investigated the magneto-optical properties of type-II InP / GaAs quantum dots using single-dot spectroscopy. The emission energy from individual dots presents a quadratic diamagnetic shift and a linear Zeeman splitting as a function of magnetic fields up to 10 T, as previously observed for type-I systems. We analyzed the in-plane localization of the carriers using the diamagnetic shift results. The values for the exciton g factor obtained for a large number of a InP / GaAs dots are mainly constant, independent of the emission energy, and therefore, of the quantum dot dimensions. The result is attributed to the weak confinement of the holes in type-II InP / GaAs quantum dots.

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